00394nam a2200121Ia 4500 150223s9999 xx 000 0 und d 9710864890 HB 171.5 .G993 2004 Guzman, Juliet S. et. al. Mastering the principles of Economics / Juliet S. Guzaman et. al. Philippines : National Book Store, 2004 123 pages : 22 cm. 283325 283325